Modeling of Fuzzy Logic Controller for Photovoltaic Maximum Power Point Tracker

Abstract

In this paper a fuzzy logic controller for maximum power point tracker of photovoltaic (PV) energy system is
introduced. This controller uses a boost converter to control the terminal voltage of PV system to work at the
maximum power point. The load side consists of battery and control switches to control the power flow from the
PV system to the battery and the load. The system is modeled using Matlab/Simulink program. The output power
from the PV system with the use of fuzzy controller is compared with the theoretical maximum power from the
same system and the power output using the best constant output voltage. The fuzzy controller shows stable
operation for different data introduced to the system. It also restrains any overshooting in input or output
systems and increases the quantum of energy captured considerably.
Keywords: Photovoltaic, fuzzy, modeling